Ventilated hood.



T. J. GARBITY. VENTILATED HOOD.

APPLICATION FILED 00T. 16,1912.

Patented Aug. 26, 1913.

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Illf' T. J. GARRITY.

VENTILATED HOOD.

APPLIGATION FILED 00T.1e,1912.

Patented Aug. 26, 1913.

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2 SHEETS-SHEET 2.

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VENTELATED H9013.

To all wiz-0m t may concern Be it known that il, THOMAS d. GARRITY, a citizen of the United States, residing at Philadelphia. in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful improvements in Ventilated Hoods, of which the following is aspeciiication. f

My invention relates to improvements in ventilated hoods, and more particularly to an improved construction of hood adapted to be Worn by painters and the like who work in close confined and gaseous spaces which allows a supply of fresh air to the workman without any undue pressure and discomfort incident thereto.

A further object is to improve upon the construction disclosed in my pending application tiled May 22, 1912, and given Serial No. 699,059.

With these andother objects in view, the invention consists incertain novel features of construction and combinations and ar'- rangements of parts as-will be more fully hereinafter claims.

lln the accompanying drawings: Figure 1 is a' View in side'elevation illustrating my F1g52' improvements in operative position.v is a view in longitudinal section through the the supply pipe and the belt in elevation. Fig. 3 is an enlarged fragment-ary sectional view illustrating the valve controlling the supply of air Fig. 4c isa top plan View of the inner helmet shown in Fig. 2. Fig. 5 is a view in side elevation of the inner helmet. Fig. 6 is a View in side elevation partly broken away illustrating a modified form of helmet, and Fig. 7 is a view in horizontal section on an enlarged scale on the line 7-7 of Fig. 6.

My improved device comprises an inner helmet 1 and an outer helmet 2 spaced apart by reason of the shape of the inner helmet 'as will be hereinafter explained. A flexible apron 3 is secured over the outer hood, and is provided with a transparent sect-ion 4f located in front of the users face, so that he.

may observe the work. This apron is provided with arm holes 4a adjacent its lower edge, so that 4the apron is adapted to receive the arms of the user, and by thus positioning the same is held in proper position. rllhe inner helmet 1 is provided with outwardly projecting hollow ribs 5 which extend from Speccation ot Letters Eat-tent. Application filed october 16, 1912.

described and pointed out in the Patented Aug.. 26, 1913.

Serial No. 725,980.

a point near" the center at the top to the lower edge of the helmet. Fliese ribs are formed integrally and operate to space the elmets apart as it is to be understood the outer helmet 2 rests and tits upon the ribs 5. rlhese ribs, as above stated, terminate short of the center or" the helmet at the top, so that they provide an ample air space into which a pipe 6 discharges the air. This `pipe is secured through the outer hood 2 and the flexible apron 3, and is bent so as to conform in shape to the shape of the outer hood. The 'pipe 6 terminates at one vside of the device, and is connected to an air supply hose 7 which is located preferably between the arm and body of the user, and has a regulating valve or cock 8 which is secured in a clamp 9 on a belt 10, the latter being located around the waist of the user. It is to be understood that the hose 7 will be connected to any source of air supply, so that the air i's forced into the space between the hoods, and is deflected downwardly so that the user breathes asuppl of fresh vair at'all times regardless of the coniclitions around l1im."'l`l1is air is not in a confined space, but flows freely downward throughthe open 'lower'lend of 'the apron,

Abut is suli'iciently strong to keep out the impure gases. A liexible apron 11 is secured to the inner helmet and extends down the back of the users head and over his ears to protect this portion of his head from the incoming air. Inside the inner helmet, a sweat band 12 is provided having an adjustable lacing 13 therein so that it may be made to fit any size head. By reason of the hollow ribs 5 on the inner helmet, a supply of air is permitted to enter the Vinner helmet and keep cool the head of the user, hence these ribs have a double function, namely, ythey space the helmets apart to allow a free circulation of air downwardly between them, and they also operate as air inlets to keep the head cool.

In the modication illustrated in Figs. 6 and 7, l employ a metallic helmet which is of general spherical form comprising two members 14 and 15 connected at their upper ends by a hinge 16.' The member 14 has a transparent section 17 through which the user may view his surroundings, and when provided with my improved helmet: 1, he

will be thoroughly protected from the air which is blown downwardly through the supply pipe 18 communicating with the top can also keep his head the air which flows through the ribs 5. The back section 15 is designed to be opened to allow the helmet to be readily placed in position on the head, and the two sections throughout their edge are rabbeted as shown at 19 to form a tight joint. Spring catches 20 are connected to the inner face yof one of the members and locked with the other member` when the members are brought together, and push buttons 21 are provided t0 operate the catches to release them when it is desired to open the helmet. rI`he lower end of the helmet which is positioned around the neck or upon they shoulders of t-he user has a flange 22 around which the a'pron 23 may be secured. I have shown snap buttons 24 for the purpose.

Various other slightchanges might be made in the general form and arrangement of parts described wit-hout departing from my invention, and hence I do not limit myself to t-he precise details set forth, but con- Sider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A device of the character described, comprising inner and outer helmets, a depending apron secured to the outer helmet, said inner helmet having integral ribs on its outer face spacing the helmets apart and of section 14, and he cool by reason of forming air channels inside the inner helmet substantially as y and between the helmets, described.

2. A device of the character described,

comprising inner and outer helmets, adepending apron secured to the outer helmet, and said inner helmet having its outer wall formed with integral hollow outwardly projectingribs contactingwith theinner surface of the outer helmet and providing air spaces between the helmets and between the head and the inner helmet when the latter is in operative position, substantially as described.

3. A device of the comprising-inner and outer helmets, a

character described,

pending apron secured to the outer h elmet, said inner helmet having integral ribs on the helmets ap art its outer face spacing the'inner and forming air channels inside helmet and between the helmets, extending from the lower edges of the inner helmet to a point short of the center of the helmet at the top, whereby an air space is formed at the center of the inner helmet between the same and the outer helmet, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS J. GARRITY."

Witnesses CHARLES E. Po'r'rs, R. H. KRENKEL,

said ribs 

